Evaporating apparatus



(No Model.)

F. J. OAKES.

EVAPOJAAKIIING` APPARATUS.

No. 319,611. Patented June 9, 1885.

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FRANOIS J. OAKES, OF BROOKLYN, NEV YORK.

EVAPO RATING APPARATUS.

PECIFICATION forming part of Letters Patent No. 319,611, dated June 9, 1885.

l Application filed March 21, 1985. (No model.)

, To all whom, it may concern.:

Be it known that I, FRANCIS J. Onnns, of Brooklyn, in Kings county and the State of New York, Vhave invented a certain new and useful Improvement in Evaporating Apparatus, of which the following is a specification.

The object of my improvement is to produce a simple and ei'ective apparatus adapted for, use in evaporating and concentrating liquids-such, for instance, as liquid dyes.

I will describe an apparatus embodying my improvement, and then point out the various features in the claims.

In the accompanying drawings, Figure l is a longitudinal vertical section of an appara tus embodying my improvement. Fig. 2 is a transverse vertical section ot' the same. Fig. 3 is a horizontal section of the same, taken at the plane of the dotted line .t as, Fig. 2.

Similar letters of reference designate corresponding parts in all the iigures.

A designates a chamber, which is shown as of rectangular form, and may be made of metal or any other suitable material. In this chamber A are diaphragms B B B2, over which the `liquid to be evaporated is intended to travel while being evaporated or concentrated. These diaphragms may advantageously be made of sheet metal. The diaphragms B ineline downwardly widthwise of the chamber A from the center outward some distance, and then incline .upwardly to the side walls of the chamber. At the lowest part are perforations or openings. rlhe diaphragms B B2 extend from the side walls of the chamber at a downward incline toward the center, a space being left between the openings. The diaphragms B and the diaphragms B B'l alternate from the top to the bottom of the chamber A. The bottom of the chamber A is shown as inclined from the side walls toward the center. Liquid to be evaporated or concentrated is admitted at the top of the chamber, and trickles thence over the partitions, and from each to the next below until it reaches the bottom of the chamber. By the time it arrives there it is intended to be concentrated to the desired degree. It may be removed from the bottom of the chamber in any suitable manner.

C Cdesignate two sinuous pipes consisting, severally, of straight sections and connecting return-bends. They are arranged at a short distance from the side walls of the chamber A, and, as shown, extend laterally in a zigzag manner. Steam, hot water, heated air, or other heating agent is circulated through these pipes, and the radiated heat eonduces to the evaporation or concentration or' the liquid in the chamber. As shown, these pipes extend in such position relatively to the portions of the diaphragme from which the liquid being treated iiows that the liquid in escaping from the diaphragms will trickle over the pipes.

Outside the side walls of the chamber A are receptacles D, to which air is supplied. This air will preferably bc dried either by treatment with chemicals or otherwise, and also heated. The two receptacles D may advantageously be vconnected-as, for instance, by a pipe or pipes, D'-and then they can be supplied by a single pipe, D2. Numerous openings, c, are made in the side walls ot the chamber below the diaphragms, and through these openings the air passes from the receptacles into the chamber. The heated air admitted to the chamber escapes through pipes d, eX- tending from the chamber below the diaphragms B through the receptacles D into receptacles F, arranged outside the receptacles D. The receptacles F may be connected by a pipe, F, and then the air which enters them may be carried away by a single pipe,

F2. Water formed by the condensation of vapor in the air is conducted away by a pipe, F3. The air passes from the receptacles D into the chamber A under the several diaphragms B B2, and, circulating around the inner edges of the said diaphragms, escapes through the pipes d below the diaphragms B. The air circulated through the chamber A not only concentrates the liquid in the chamber by heating it, but also by absorbing and taking up moisture from the liquid'.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In an evaporating apparatus, the combination of a cham ber for containing liquid to be evaporated, pipes for conveying a heating agent through the same, and pipes or conduits conveying a heating agent through the cham whereby air may be caused to circulate in and ber, and'v pipes or conduits whereby air may 1o through the chamber, substantially as specibe caused tocirculate in and through the fled. chamber, substantially as specified.

5 2. In an evaporating apparatus, the com- FRANCIS J. OAKES.

bination of a chamber for containing liquid to Vitnesses:` A be evaporated, diaphragms over which the T.`J. KEANE, liquid to be ,evaporated may flow, pipes for E. T. ROCHE. 

